🌱✗ Tested and false“The dark berries a mature bay tree produces can be used in the kitchen the same way as the leaves”
The fruit of Laurus nobilis is classed as ornamental only, not for eating, and handling is even flagged as needing gloves. This is a different part of the plant from the leaf, with a different safety profile, so treating it as an extension of the culinary leaf harvest isn't supported.
What to do: Harvest and use only the leaves. If your bay tree flowers and sets fruit, which is uncommon outdoors here, leave the berries alone rather than experimenting with them in cooking.
In Scotland: Bay rarely flowers and fruits reliably outdoors in Scotland's cooler, shorter summers, so this is a low-risk myth here, but it's worth flagging for anyone with a long-established, sheltered specimen that does set fruit.
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“Dropping a dried bay leaf into the flour or rice keeps weevils and moths out of it”
For the pest people are usually trying to stop, pantry moths, extension entomologists found no benefit from bay leaves; successful control comes down to sanitation, not aromatic leaves. Separate lab work does show some grain weevils can be deterred by bay's essential oils, but that's a different pest to the one home gardeners are usually fighting, and a shop-bought bay leaf loses potency within a week or two on an open shelf anyway.
What to do: Use airtight containers for stored flour, rice and dried herbs from your own harvest, and check packets for pests before they go in the cupboard, rather than relying on a bay leaf as protection.
In Scotland: Scottish kitchens and larders tend to run cooler and damper than the recipe-blog kitchens this tip usually circulates in, which if anything favours grain moths and weevils establishing, making sanitation and airtight storage more important, not less.
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“Bay and rosemary share the same H4 hardiness rating, so they need the same winter protection”
The two plants' own official growing guides point to different real threats. For bay, the emphasis is on air temperature and young or container growth, with fleece or moving pots under cover recommended once temperatures drop below -5C. For rosemary, the guide is explicit that waterlogged, freezing compost rots the roots and kills the plant, with drainage flagged as the main defence rather than moving it indoors. Treating the two as interchangeable on the strength of a shared hardiness number misses that the actual failure mode is different for each.
What to do: For bay, focus on moving containers under cover or fleecing them in hard frost. For rosemary, focus on drainage (raise the pot, add grit) and don't assume the same sheltering routine covers both.
In Scotland: Many Scottish gardeners grow bay and rosemary in matching pots by the back door and manage them as a pair; it's worth treating them as two separate winter routines rather than one.
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- RHS, Bay Tree Care and UsesRecommends fleecing or moving containers under cover once temperatures fall below -5C, and protecting pots against root freezing.
- RHS, How to grow RosemaryStates rosemary survives to about -8C when established but that cold, wet compost causing root rot is the main winter risk, with good drainage as the key preventive measure.
“Whole bay leaves left in a finished dish are harmless — just fish around them, no need to remove before serving.”
Whole bay leaves don't soften in cooking and don't digest. Peer-reviewed case reports document real injuries: a cluster of hypopharyngeal/esophageal bay-leaf impactions requiring hospital removal (Buto et al., Annals of Internal Medicine, 1990), a case of duodenal obstruction from a swallowed bay leaf, and a case of bay leaf perforating a Meckel's diverticulum (Bell & Mustard, Canadian Journal of Surgery, 1997). This is a distinct hazard from the pet-toxicity and pantry-pest claims already covered — it's about people, not pests or pets.
What to do: Always fish whole bay leaves out of soups, stews, and sauces before serving, especially to children. Use ground bay, or contain whole leaves in a bouquet garni/tea ball, if you want to leave them in during cooking.
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“Bay tree leaves and berries are poisonous to cats, dogs and horses”
Bay contains eugenol and other essential oils that cause vomiting and diarrhoea in pets, and whole leaves can cause a physical gut blockage in cats because they are hard to break down. The toxicity is graded as minor rather than severe, but it is real and applies to the whole plant, not just a folk tale about the berries.
What to do: Keep bay trees, hedge trimmings and fallen leaves away from areas pets have unsupervised access to, and don't leave prunings where a dog might chew them.
In Scotland: Bay is usually pot-grown here so it can be moved under cover for winter, which often puts it right by a back door or conservatory, exactly where a curious cat or dog spends the most time.
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